发明名称 |
HIGH FREQUENCY OSCILLATOR-INVERTER WITH IMPROVED REGENERATIVE POWER SUPPLY |
摘要 |
An improved power supply for one or more electric discharge lamps includes a high frequency oscillator-inverter circuit coupled to the output of a full-wave rectifier circuit via a transformer primary winding (25). The rectifier circuit is energized from a low frequency source of AC voltage. The oscillator-inverter circuit supplies high frequency oscillations to the lamp via a frequency-dependent ballast coupling circuit. A regenerative power supply is coupled to the transformer primary winding by means of a secondary winding (62) of the transformer thereby to charge a capacitor (49) operative as a switchable auxiliary supply voltage for the oscillator-inverter circuit. Improved start-up operation is achieved by winding the transformer (25, 62) so as to provide a polarity inversion for the supply of electric energy to the regenerative power supply.
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申请公布号 |
CA2046153(A1) |
申请公布日期 |
1992.01.07 |
申请号 |
CA19912046153 |
申请日期 |
1991.07.03 |
申请人 |
N.V. PHILIPS' GLOEILAMPENFABRIEKEN |
发明人 |
ERHARDT, ROBERT A.;BROWN, ALLAN E. |
分类号 |
H05B41/28;(IPC1-7):H05B37/02 |
主分类号 |
H05B41/28 |
代理机构 |
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